What Size Inverter Do You Need for an RV?

RV parked at night in a starlit sky

An RV inverter should cover the largest group of AC loads you will run together, plus motor and compressor surge. For many RVs, 2,000W handles outlets and kitchen appliances, while 3,000W provides more … Read more

Can You Use Synthetic Oil in a Generator?

Synthetic oil being poured

Synthetic oil can improve cold starts and high-temperature protection, but the label alone does not make it right for every generator. Use it only when the owner’s manual permits the oil viscosity and … Read more

What Size Breaker Does a Heat Pump Need?

Circuit breaker 9 circuits

Choose a heat-pump breaker from the equipment nameplate, not from tonnage. The outdoor unit lists minimum circuit ampacity and maximum fuse or circuit-breaker size, and those values can differ substantially between models with … Read more

Can a NiMH Charger Charge NiCd Batteries?

NiMH Battery Charger

Do not put NiCd batteries in a NiMH charger unless the charger explicitly supports both chemistries. NiMH and NiCd cells may share the same 1.2-volt rating and physical size, but safe charging depends … Read more