Power Strip Buying Guide

Buy it like an engineer.

Most listings throw numbers at you with no context. This guide decodes every spec — then matches a strip to what you're actually plugging in.

Decode the specs ↓ Skip to the finder
UPDATED JUN 2026 · ~9 MIN READ · BY CRST ENGINEERING
CH 01
THE SPECS THAT MATTER

Eight numbers worth checking.

Every legitimate power strip publishes these. If a listing hides one, that's an answer too.

Surge energy

measured in JOULES (J)

How much surge energy the strip can absorb over its life before it stops protecting. Think of it as a fuel tank for spikes.

Look for 1000J+ for small electronics, 2000–4000J for workstations, AV, and tools.

Amps & watts

15A · 1875W max

The total load the strip can carry. A standard outlet is 15A (≈1875W at 125V). Add up your devices and stay under it.

Match the 15A breaker rating; never daisy-chain to exceed it.

Wire gauge

AWG — lower = thicker

The thickness of the copper. Thicker wire carries current cooler and safer. Bargain strips quietly use thinner wire.

Want 14AWG for a 15A strip; avoid 16AWG or copper-clad aluminum.

Outlets & spacing

count · inches apart

Not just how many outlets, but how far apart. Wide spacing fits bulky wall-warts without blocking neighbors.

Look for 1.5–2.6" spacing if you run lots of AC adapters.

Cord length

6 – 15 ft

Reach without tension or coiling. Measure the run to the wall before you buy — too short strains the plug, too long clutters.

Pick the shortest cord that reaches comfortably; mountable strips help.

USB & USB-C PD

watts of Power Delivery

Built-in USB saves adapters. USB-C with Power Delivery (PD) fast-charges phones and tablets at its rated wattage.

Phones are happy at 20–30W; laptops 45W+ should use their own brick.

Housing

metal vs. plastic

What surrounds live parts. Metal dissipates heat, resists impact, and won't feed a flame the way thin plastic can.

Prefer a metal housing with flame-retardant internals for heavy loads.

Protection features

MOV · thermal · breaker

The safety hardware: a real MOV for surges, a thermal cutoff for overheating, and a resettable breaker for overloads.

Want a protected-status light and a low clamping voltage (≈330–400V).

A spec only counts if it's verified. Numbers like joules and clamping voltage are meaningful when the strip is listed to UL 1449 — see how certification works →

CH 02
LOAD CHECK

Will it all fit on one strip?

Tap everything you'd plug in — and how many. The rule: total draw stays under the 15A / 1875W rating, and under 80% of it for anything running continuously.

Everyday gear
1
1
1
1
1
1
Workstation & play
1
1
1
1
1
1
Heavy draw
1
1
1

TYPICAL DRAWS — CHECK THE LABEL ON YOUR DEVICE FOR EXACT WATTAGE.

LOAD METER · 15A / 1875W STANDBY
Total connected load
0W
0.0A
of 15A
0%
of rating
1875W
headroom
Tap the devices you’d plug in. We’ll total the draw against a standard 15A / 1875W strip.
CH 03
FEATURES THAT EARN THEIR COST

Six features worth paying for.

Past the safety basics, these are the differences you'll feel every day — and the ones bargain strips fake or skip.

Power strip with individual illuminated switches per outlet

Individual switches

Kill one device without unplugging the rest, and stop standby draw at the source. Lit switches show what's live at a glance.

SHOP SWITCHED STRIPS →
Wall-mounted power strip with bracket

Mounting hardware

Screw bracket, 3M adhesive, or keyhole — power off the floor and exactly where you work. Essential for benches and garages.

SHOP MOUNTABLE →
Power strip USB-A and USB-C fast charging ports

USB-C fast charging

Built-in USB-C PD charges phones and tablets without a wall brick — freeing AC outlets for things that need them.

SHOP USB MODELS →
Widely spaced outlets fitting large adapters

Wide outlet spacing

Bulky adapters block neighboring sockets on cramped strips. Wide spacing means every outlet you paid for stays usable.

SHOP SURGE STRIPS →
Built-in cord management wrap ears on a power strip

Cord management

Wrap ears and keepers take up slack instead of leaving it pooled on the floor — fewer trip hazards, less strain on the plug.

SHOP CORD MGMT →
Inside a CRST power strip: one-piece copper bus bars and metal housing

Metal housing + breaker

An aluminum-alloy shell shrugs off knocks and heat, and a press-reset breaker turns an overload into a two-second fix.

SHOP HEAVY DUTY →
CH 04
MATCH IT TO YOUR SETUP

Two questions. Your shortlist.

Q1 — Where will it live?
Q2 — What matters most?
YOUR SHORTLIST
CH 05
COMPARE THE LINE

Every CRST strip, side by side.

Same 14AWG copper and independent certification across the line — what changes is capacity, reach, and features.

ProductOutletsUSBSurgeCordMountSwitchesPrice
6-Outlet + 2 USB Metal Power Strip
6-Outlet + 2 USB MetalBest for · Desk
 62× A1200J6 ftYesLit master$29.99
12-Outlet Metal Power Strip
12-Outlet Metal · 9ftBest for · Most sockets
 12—1020J9 ft—Per-outlet$56.99
8-Outlet 4-Way Bracket Mount
8-Outlet 4-Way BracketBest for · Value + mount
 8—2100J6 ft4-wayPer-outlet$26.99
10-Outlet Metal Surge Protector 2800J
10-Outlet Surge · 2800JBest for · Max protection
 102× A2800J15 ftYesPer-outlet$37.99
12-Outlet Heavy-Duty power strip
12-Outlet Heavy-DutyBest for · Bench & rack
 12—2100J6 ftYesMaster + breakerFrom $37.99
Gaming RGB Power Strip
Gaming RGB + USB-CBest for · Gaming
 6A + C4000J6 ft—Master$39.99
Retractable Cord Reel
Cord Reel · 50ft · 14AWGBest for · Mobile reach
 ———50 ft180° swivel—$72.99
ALL MODELS · 14AWG COPPER · NRTL LISTED (ETL · SGS · UL) · 18-MO WARRANTY (FREE EXTENSION TO 3-YR ON REGISTRATION)
CH 06
WHAT TO AVOID

Four red flags on a listing.

The bottom of the market competes on price by cutting what you can't see. These tells give it away before you buy.

No certification mark on the unit

A UL/ETL logo in the listing photos means nothing — the mark must be molded or printed on the strip itself, with a file number you can look up.

"Surge protected" with no joule number

If the listing won't state a joule rating — or a clamping voltage — assume there's no real MOV inside. It's a power strip wearing a surge protector's label.

12 outlets for the price of lunch

Copper, breakers, and certified MOVs have a real cost. A rock-bottom price is paid for with thin copper-clad aluminum and untested internals.

No wire gauge listed

Gauge is the cheapest spec to print and the most expensive to honor. Silence on AWG almost always means 16AWG or thinner behind a 15A label.

We cut one of each open so you don't have to — see the teardown comparison →

CH 07
BUYER QUESTIONS

Asked before every order.

How many joules do I need in a surge protector? +
For phones, lamps and chargers, 1000–1200J is plenty. For a computer, TV or AV stack, choose 2000J or more — higher ratings protect better and last longer, because the MOV inside depletes with every surge it absorbs. See surge protectors by joule rating.
What's the difference between a power strip and a surge protector? +
A power strip only adds outlets. A surge protector adds a joule-rated MOV circuit that clamps voltage spikes before they reach your gear. If a listing has no joule rating, it's not a surge protector — it's just more sockets.
What does 14AWG mean and why does it matter? +
AWG measures wire thickness — lower numbers are thicker. A 15A strip should use 14AWG copper, which carries a full load without overheating. Bargain strips quietly substitute 16–18AWG or copper-clad aluminum, which runs hot under the same load.
Is it safe to plug a power strip into an extension cord? +
Avoid it. Every added link raises resistance and overload risk, and daisy-chaining can exceed the first strip's breaker rating. Plug strips directly into the wall — if you need reach, buy a strip with a longer cord or a cord reel instead.
How long does a surge protector last? +
Until its joule budget is spent — every surge it absorbs uses some up. That can be years on a clean circuit or months in a storm-prone area. A protected-status light shows when the MOV is exhausted and the unit should be replaced.
Can I run a space heater on a power strip? +
No. A 1500W heater alone consumes nearly the entire 1875W rating of a 15A strip, and its sustained draw overheats shared connections. Heaters, kettles, and other high-watt appliances should plug directly into a wall outlet.
What certifications should a power strip have? +
Look for a UL or ETL listing mark on the unit itself — for surge protection specifically, listing to UL 1449. An unlisted joule number is a marketing claim, not a tested rating. CRST publishes downloadable certificates for every model.
PUT IT TO WORK

Now you can shop by the numbers.

Every CRST product page lists these specs in full — verified, certified, and downloadable. Filter by use case and compare like-for-like.

Shop power strips How certification works →