Vid's guide might help.

https://pinside.com/pinball/forum/topic/replacing-line-cords-plugs-wall-sockets-vids-guide

LTG : )

Amperage/current and gauge are usually the most important things. Watts doesn't matter at all in this context. Voltage is standard residential wall outlet voltage (110-120v).

Just to throw in another variable, sometimes you need a round cord, sometimes a flat style one.

Round: https://www.pinballlife.com/15-foot-power-cord-with-stripped-end.html

I think I got the flat style electrical cord from PBR, but I'm not 100% sure: http://www.pbresource.com/tools.html

Gauge and length are the only considerations. Euro games run on higher voltage, lower amperage. US games lower voltage, more amps. 15 foot 16 gauge cord is fine. Any longer get a 14 gauge cord. Don't use power strips if your voltage fluctuates considerably.

First time I've heard that.

I always use surge protector power strips.

If you are having serious problems with voltage fluctuations, you may want to look into power conditioners.

Just buy the right size replacement at Home Depot there is no magic here.

The thermistor in the power box is the built in surge protector. I've fixed a couple of games that have been hit. Thermistor completely smoked both times due to power company surges. Replace it and game works 100%. Pinball engineers figured out a long time ago that surges can happen and added a 10¢ part to protect the entire game. It works.

A Kill-a-Watt meter (about $25, Harbor Freight, Amazon) plugged into any outlet is a good way to easily monitor your house voltage all day. 4 - 7pm on hot days is when you'll likely see dips.