Adding A Second 200 Amp Breaker Box

Nema breaker 3r Can i add a grounding bar kit to this old breaker box? it’s a 1970s Circuit breakers

Can I add a grounding bar kit to this old breaker box? It’s a 1970s

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How to add a new circuit breaker to your electrical panel

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Siemens W0202MB1200CU 120/240 VAC 200 Amp 1-Phase 3-Wire NEMA 3R Main

How to Add a New Circuit Breaker to Your Electrical Panel

Can I add a grounding bar kit to this old breaker box? It’s a 1970s