Istari Posted March 15, 2005 Share Posted March 15, 2005 I have a couple of Vintage H.H. Scott tube amps (222, 99A & 99C) and was wondering if they need to be connected to ground. The original AC cord is a two prong type, so back in the 50's and 60's they must not of grounded them, unless it was to the radiator. Would it be a good thing to ground these?, would it cause any harm to the amplifiers? Thanks Quote Link to comment Share on other sites More sharing options...
Shade Posted March 15, 2005 Share Posted March 15, 2005 You do need to make sure the plug is in the right way. If it's turned around, you may notice some hum. Quote Link to comment Share on other sites More sharing options...
Istari Posted March 15, 2005 Author Share Posted March 15, 2005 I know that but I'm wondering if grounding it would do any goor or harm. Quote Link to comment Share on other sites More sharing options...
WMcD Posted March 15, 2005 Share Posted March 15, 2005 Back in those days most all electrical equipment only had a two-wire a.c. feed. Some receivers and most all ham gear had a ground terminal on the chassis to allow grounding to a stake outside or to plumbing. So it is not going to do any harm. Grounding the chassis of all gear may prevent some hum issues. One reason for not having the ground on the a.c. feed was that most houses had a two-wire distribution system. I don't know when the electrical codes changed. It was probably the mid-1950s. Gil Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.