Forum Discussion
mchero
Feb 28, 2020Explorer
Chum lee wrote:
Just a question. Where does this 300 amps (charging) come from for continuous use? Very few automotive type alternators will produce 300 amps, (@14 volts) continuous, for battery charging purposes. IME, when solenoids/relays regularly fail, it's because they get too hot. That can be a result of small wire size on the signal circuit, or, too much resistance on the main load (switched/charging) circuit.
When you say the solenoid is warm, . . . . . how warm is it? Too hot to touch?
Chum lee
If your referring to one of my posts. I don't believe I stated anything about an alternator putting out 300 amps. Although if you Google "dual extra heavy duty alternator" I see 320 amp alternators.
IF the isolator solenoid is used to assist starting I would assume it would have to carry a large load. Have yet to clamp my VOM to the starter cables to see how many amps the starter draws. I'm thinking the beefier the solenoid the longer it will last.
My current trombetta is warm to the touch, not hot as in burn.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,193 PostsLatest Activity: Jan 28, 2025